if_eex.h

IXP425的BSP代码

typedef struct ac_iasetup       /* AC_IASETUP - Individual Address Setup */
    {
    UINT8  ciAddress[EA_SIZE];          /* local ethernet address */
    UINT16 ciFill;
    } AC_IASETUP;

typedef struct ac_config        /* AC_CONFIG - i82586 Configure */
    {
    UINT8 byteCount;                    /* byte count */
    UINT8 fifoLimit;                    /* FIFO limit */
    UINT8 srdy_saveBad;                 /* SRD/~ARDY, save bad frames */
    UINT8 addrLen_loopback;             /* address length, loopback */
    UINT8 backoff;                      /* backoff method */
    UINT8 interframe;                   /* interframe spacing */
    UINT8 slotTimeLow;                  /* slot time -low byte */
    UINT8 slotTimeHi_retry;             /* slot time -upper 3 bits, max retry */
    UINT8 promiscuous;                  /* promiscuous mode, other stuff */
    UINT8 carrier_collision;            /* carrier sense, collision detect */
    UINT8 minFrame;                     /* minimum frame length */
    UINT8 notUsed;
    UINT16 ccFill;
    } AC_CONFIG;

typedef struct ac_mcast         /* AC_MCAST - Multicast Setup */
    {
    UINT16 cmMcCount;                   /* the number of bytes in MC list */
    UINT8  cmAddrList[6 * N_MCAST];     /* mulitcast address list */
    } AC_MCAST;

typedef struct ac_tdr           /* AC_TDR - Time Domain Reflectometry */
    {
    UINT16 ctInfo;                      /* time, link OK, tx err, line err */
    UINT16 ctReserve1;                  /* reserved */
    } AC_TDR;

typedef struct ac_dump          /* AC_DUMP - Dump */
    {
    EEX_SHORTLINK bufAddr;              /* address of dump buffer */
    } AC_DUMP;


/* Command Frame Description and defines */

typedef struct cfd              /* CFD - Command Frame Descriptor */
    {
    volatile UINT16     cfdStatus;      /* command status */
    UINT16              cfdCommand;     /* command */
    EEX_SHORTLINK       link;           /* address of next CB */
    union                               /* command dependent section */
        {
        struct ac_iasetup       cfd_iasetup;    /* IA setup */
        struct ac_config        cfd_config;     /* config */
        struct ac_mcast         cfd_mcast;      /* multicast setup */
        struct ac_tdr           cfd_tdr;        /* TDR */
        struct ac_dump          cfd_dump;       /* dump */
        } cfd_cmd;
    } CFD;

#define cfdIASetup      cfd_cmd.cfd_iasetup
#define cfdConfig       cfd_cmd.cfd_config
#define cfdMcast        cfd_cmd.cfd_mcast
#define cfdTransmit     cfd_cmd.cfd_transmit
#define cfdTDR          cfd_cmd.cfd_tdr
#define cfdDump         cfd_cmd.cfd_dump

#define CFD_C_NOP       0x0000          /* No Operation */
#define CFD_C_IASETUP   0x0001          /* Individual Address Setup */
#define CFD_C_CONFIG    0x0002          /* Configure Chip */
#define CFD_C_MASETUP   0x0003          /* Multicast Setup */
#define CFD_C_XMIT      0x0004          /* Transmit (see below too ...) */
#define CFD_C_TDR       0x0005          /* Time Domain Reflectometry */
#define CFD_C_DUMP      0x0006          /* Dump Registers */
#define CFD_C_DIAG      0x0007          /* Diagnose */
#define CFD_C_INT       0x2000          /* 586 interrupts CPU after execution */
#define CFD_C_SE        0x4000          /* CU should suspend after execution */
#define CFD_C_EL        0x8000          /* End of command list */

#define CFD_S_ABORTED   0x1000          /* Command was aborted via CU Abort */
#define CFD_S_OK        0x2000          /* Command completed successfully */
#define CFD_S_BUSY      0x4000          /* CU is executing this command */
#define CFD_S_COMPLETE  0x8000          /* Command complete */


/* 82586 Transmit/Receive Frames */

typedef struct tfd              /* TFD - Transmit Frame Descriptor */
    {
    volatile UINT16     status;                 /* status field */
    UINT16              command;                /* command field */
    EEX_SHORTLINK       lNext;                  /* link to next desc. */
    EEX_SHORTLINK       lBufDesc;               /* link to buf desc. */
    } TFD;

/* special TFD specific command block bit masks */

#define CFD_S_COLL_MASK 0x000f          /* to access number of collisions */
#define CFD_S_RETRY     0x0020          /* reached the max number of retries */
#define CFD_S_HBEAT     0x0040          /* Heartbeat Indicator */
#define CFD_S_TRDEF     0x0080          /* Transmission Deferred */
#define CFD_S_DMA_UNDR  0x0100          /* DMA Underrun (no data) */
#define CFD_S_NO_CTS    0x0200          /* Lost Clear To Send signal */
#define CFD_S_NO_CRS    0x0400          /* No Carrier Sense */


typedef struct tbd              /* TBD - Transmit Buffer Descriptor */
    {
    volatile UINT16     actCount;       /* Actual byte count */
    EEX_SHORTLINK       lNext;          /* Address of next buffer descr. */
    EEX_LINK            lBufAddr;       /* Address of this data buffer */
    } TBD;

/* TBD bits */

#define ACT_COUNT_MASK  ~0xc000         /* length fields are 14 bits */
#define TBD_S_EOF       0x8000          /* End-of-frame bit */

#ifdef  EEX_AL_LOC
typedef struct tframe           /* TFRAME - all-in-one transmit frame */
    {
    TFD                 tfd;
    TBD                 tbd;
    char                buffer [FRAME_SIZE];
    } TFRAME;
#else
typedef struct tframe           /* TFRAME - all-in-one transmit frame */
    {
    TFD                 tfd;
    union
        {
        struct
            {
            char                header [EH_SIZE];
            char                data [ETHERMTU];
            } buff_struct;
        char                buffer [FRAME_SIZE];
        } buff_union;
    TBD                 tbd;
    } TFRAME;
#endif  /* EEX_AL_LOC */


typedef struct rfd              /* RFD - Receive Frame Descriptor */
    {
    volatile UINT16     status;                 /* status field */
    UINT16              command;                /* command field */
    EEX_SHORTLINK       lNext;                  /* link to next desc. */
    EEX_SHORTLINK       lBufDesc;               /* link to buf desc. */
    } RFD;

/* RFD bit masks */

#define RFD_S_EOP       0x0040          /* no EOP flag */
#define RFD_S_SHORT     0x0080          /* fewer bytes than configured min. */
#define RFD_S_DMA       0x0100          /* DMA Overrun failure to get bus */
#define RFD_S_RSRC      0x0200          /* received, but ran out of buffers */
#define RFD_S_ALGN      0x0400          /* received misaligned with CRC error */
#define RFD_S_CRC       0x0800          /* received with CRC error */
#define RFD_S_OK        0x2000          /* frame received successfully */
#define RFD_S_BUSY      0x4000          /* frame reception ready/in progress */
#define RFD_S_COMPLETE  0x8000          /* frame reception complete */

#define RFD_M_SUSPEND   0x4000          /* suspend RU after receiving frame */
#define RFD_M_EL        0x8000          /* end of RFD list */

typedef struct rbd              /* RBD - Receive Buffer Descriptor */
    {
    volatile UINT16     actCount;       /* Actual byte count */
    EEX_SHORTLINK       lNext;          /* Address of next buffer descr. */
    EEX_LINK            lBufAddr;       /* Address of this data buffer */
    UINT16              bufSize;        /* Size of data buffer */
    } RBD;

#define RBD_S_CNT_MASK  0x3fff          /* Mask for actual byte count */
#define RBD_S_F_BIT     0x4000          /* actual count is valid */
#define RBD_S_EOF       0x8000          /* end of frame */

#define RBD_M_EL        0x8000          /* end of RBD list */

#ifdef  EEX_AL_LOC
typedef struct rframe           /* RFRAME - all-in-one received frame */
    {
    RFD                 rfd;
    RBD                 rbd;
    char                buffer [FRAME_SIZE];
    } RFRAME;
#else
typedef struct rframe           /* RFRAME - all-in-one received frame */
    {
    RFD                 rfd;
    union
        {
        struct
            {
            char                header [EH_SIZE];
            char                data [ETHERMTU];
            } buff_struct;
        char                buffer [FRAME_SIZE];
        } buff_union;
    RBD                 rbd;
    } RFRAME;
#endif  /* EEX_AL_LOC */

/* Offsets into xFRAME structures to compute board emmory offsets */

#define RF_COMMAND      2               /* command word */
#define RF_LINK         4               /* link to next RFD */

#define RB_OFFSET       6               /* dhe 10/24/94 offset of first RBD */
#define RB_LINK         2               /* dhe 10/24/94 link to next RBD */

#ifdef  EEX_AL_LOC
#define RF_ACT_COUNT    8               /* actual count in RBD */
#define RF_BUFFER       18              /* frame data buffer */
#else
#define RF_BUFFER       8               /* frame data buffer */
#define RF_ACT_COUNT    (RF_BUFFER + FRAME_SIZE)
#endif  /* EEX_AL_LOC */

#define TF_COMMAND      2               /* command word */
#define TF_LINK         4               /* link to next TFD */

#ifdef  EEX_AL_LOC
#define TF_ACT_COUNT    8               /* actual count in TBD */
#define TF_BUFFER       16              /* frame data buffer */
#else
#define TF_BUFFER       8               /* frame header starts here */
#define TF_OLDLENGTH    20              /* Take length from here */
#define TF_NEWLENGTH    14              /* put it here to be part of TFD */
#define TF_ACT_COUNT    (RF_BUFFER + FRAME_SIZE)
#endif  /* EEX_AL_LOC */

#if ((CPU_FAMILY==I960) && (defined __GNUC__))
#pragma align 0                 /* turn off alignment requirement */
#endif  /* CPU_FAMILY==I960 */

#ifdef __cplusplus
}
#endif

#endif /* __INCif_eexh */